Dustpipe says the Filtered Air Systems' BeavA ShreddA features dramatically lower dB sound levels compared to other brands of high-seed shippers. The top-filling BeavA has a 36 x 36 x 24-inch heavy steel hopper with two solid shafts and all-steel cutters. It can continually shred plywood, MDF, solid lumber and plastic, quickly and easily. Two red stop buttons are within easy reach for added safety.